The painful incident occurred during the shooting of an ad for sporting equipment and clothing manufacturer Head, and it was caught on video and posted on YouTube
ABC News reports
that it is uncertain whether or not the accident was in fact really an accident; according to Yahoo! Sports, Sharapova and Djokovic, who is currently the world's second-ranked male tennis player and playing for his country
in the Olympics, have engaged in mischievous hijinks
But the scrotum-smashing serve certainly appears to be real... watch the video and judge for yourself!